Which internet freedoms is X strongly aligned against?
You can find links to other criticisms of twitter in TFA:
Interop: https://www.eff.org/deeplinks/2021/01/twitter-and-interopera...
Privacy: https://www.eff.org/deeplinks/2020/04/twitter-removes-privac...
https://www.eff.org/deeplinks/2017/08/twitter-and-others-dou...
https://www.eff.org/deeplinks/2019/10/twitter-uninentionally...
Accountability: https://www.eff.org/deeplinks/2015/08/twitter-axes-accountab...
DM encryption: https://www.eff.org/deeplinks/2020/07/after-weeks-hack-it-pa...
Twitter is un-aligned with their goals, and has dismal reach. Facebook and instagram are unaligned with their goals and are how they reach a lot of new people.
Not super complicated, tho if i am reading between the lines - calling out the numbers feels like a call to action for other orgs. Suggesting they run their own numbers, and get off twitter.
They would not be able to enforce it on desktop computers, short of banning every user one-at-a-time, but they can easily blanket-ban it on mobile phones by requesting Apple and Google remove unauthorized third-party clients from their app stores. (Which they will do. Apple even lists unauthorized clients for services controlled by other parties as against the rules. Whatever that means.)